TWI630988B - Viscose stop structure of torque wrench - Google Patents

Abstract

The present invention discloses a rubber leakage preventing structure of a torque wrench, wherein the torque wrench comprises a shaft tube, two driving portions and adjusting knobs disposed at two ends of the shaft tube, and an insulating tube sequentially disposed on the outer peripheral side of the shaft tube. And a handle tube; the insulating tube further has a plug portion; the handle tube is formed with a set of joint portions corresponding to the plug portion; and a glue receiving portion is provided on the inner ring side of the plug portion, a glue filling; a ring groove, the ring is arranged on the inner diameter surface of the handle tube; a plurality of O-rings are arranged corresponding to the adhesive area and the ring groove, and by the composition of the above components, the adhesive is left in the limit Glue area.

Description

Viscose stop structure of torque wrench

The invention relates to the technical field related to a hand tool, in particular to an adhesive leakage preventing structure using a torque wrench.

According to the conventional torque wrenches, most of them are made of metal. In some working environments with electronic and motor products, they are easy to become the conductors of electric power. It is feared that the leakage of electricity will endanger the safety of the human body. .

Referring to FIG. 4 , the conventionally insulated torque wrench generally includes a shaft tube 91 , a torque mechanism 92 received in the shaft tube 91 , and a shaft portion 91 disposed at one end of the shaft tube 91 and connected to the torque mechanism 92 . a driving portion (not shown), an adjusting button 93 disposed at the other end of the shaft tube 91 and connected to the torque mechanism 92, and a set of insulating tubes 94 disposed on the outer peripheral side of the shaft tube 91 and abutting the driving portion. The grip tube 95 is sleeved on the outer peripheral side of the shaft tube 91 and has two ends abutting against the insulating tube 94 and the adjusting knob 93.

There are many defects in the conventional structure. Due to the poor structural design, once the adjustment knob 93 is detached from the shaft tube 91 due to maintenance, the grip tube 95 that is outside the shaft tube 91 is The insulating tube 94 is liable to fall from the shaft tube 91 due to its own weight and cause damage.

It has been known to adhere the insulating tube 94 to the shaft tube 91 by means of glue. However, the grip tube 95 and the insulating tube 94 need to be inserted into the shaft tube 91, so that the inner diameter thereof must form a gap with the outer diameter surface of the shaft tube 91, and the grip tube 95 and the insulating tube 94 are integrally formed by plastic molding. Therefore, the inner diameter of the grip tube 95 and the insulating tube 94 are removed by the gap. Outside the space, it still needs to include the slope required for demolding, so the accumulated space is added up, and the glue that is filled in will flow along the above space, resulting in the components such as the grip tube 95 and the adjusting knob 93 being removed. In addition to pollution, severe cases will be stuck and lose their effect.

In view of the above problems and deficiencies of the prior art, the main object of the present invention is to provide a glue stop leaking structure of a torque wrench to overcome the above-mentioned shortcomings of the prior art.

According to the above object of the present invention, an adhesive leakage preventing structure of a torque wrench is provided, wherein the torque wrench comprises a shaft tube, two driving portions and adjusting knobs disposed at two ends of the shaft tube, and sequentially placed on the outer peripheral side of the shaft tube. An insulating tube and a handle tube; the insulating tube further has a plug portion; the handle tube is formed with a set of joint portions corresponding to the plug portion; and a glue receiving portion is provided at the inner ring of the plug portion On the side, a glue filling is provided; a ring groove is arranged on the inner diameter surface of the grip tube; a plurality of O-rings are arranged corresponding to the adhesive area and the ring groove, and the composition of the above components is used to limit the adhesive. Leave it in the glue area.

1‧‧‧ shaft tube

12‧‧‧Bump

2‧‧‧Torque mechanism

3‧‧‧ Drive Department

4‧‧‧Adjustment button

5‧‧‧Insulation tube

52‧‧‧Limited Department

54‧‧‧Interface

56‧‧‧容胶区

6‧‧‧ grip tube

62‧‧‧ Sockets

64‧‧‧Transparent window

66‧‧‧ Ring groove

72, 74‧‧‧O-rings

91‧‧‧ shaft tube

92‧‧‧Torque mechanism

93‧‧‧Adjustment button

94‧‧‧Insulation tube

95‧‧‧ grip tube

P‧‧‧Viscos

Figure 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is a partial cross-sectional view showing the embodiment shown in Fig. 1.

Fig. 3 is a schematic exploded view of the embodiment shown in Fig. 1.

Figure 4 is a partial cross-sectional view of a conventional torque wrench.

Hereinafter, the torque wrench of the present invention will be further described with reference to the related drawings. For the purpose of understanding the embodiments of the present invention, the same components are denoted by the same reference numerals.

Referring to Figures 1 to 3, the rubber leakage stop structure of the torque wrench of the present invention, wherein the torque wrench comprises a shaft tube 1, a torque mechanism 2 accommodated in the shaft tube, and a shaft tube 1 a driving portion 3 connected to the torque mechanism 2 at one end, an adjusting button 4 disposed at the other end of the shaft tube 1 and connected to the torque mechanism 2, and a set of the outer peripheral side of the shaft tube 1 and the driving portion 3 An insulating tube 5, a set of grip tubes 6 disposed on the outer peripheral side of the shaft tube 1 and having opposite ends respectively abutting the insulating tube 5 and the adjusting knob 4, wherein the insulating tube 5 has at least one limiting portion 52 at both ends thereof. And a plug portion 54. The limiting portion 52 is axially recessed and formed on one end surface of the edge tube 5 . The insertion portion 54 is formed on the outer peripheral surface of the other end of the insulating tube 5 at the other end of the different insertion portion 54, and is relatively smaller than the outer diameter of the insulating tube 5.

The grip tube 6 has a set of joints 62 and a transparent window 64. The sleeve portion 62 is recessed on the inner diameter surface of the handle tube 6 corresponding to the insertion portion 54 for sleeved on the outer circumferential side of the insertion portion 54. The transparent window 62 is disposed on the grip tube 6 corresponding to the torque mechanism 2, and provides a view of the movement of the torque mechanism 2 by the transparent window 62.

The shaft tube 1 has at least one limiting stud 12 protruding from the outer peripheral surface of the corresponding limiting portion 52, and the limiting insulating tube 5 is rotated.

The adhesive leakage stop structure comprises: a glue receiving area 56, wherein the concave ring is disposed on the inner diameter surface of the plug portion 54, and a glue P is filled to form a bond between the shaft tube 1 and the insulating tube 5.

A ring groove 66 is formed on the inner diameter surface of the grip tube 6 and is adjacent to the socket portion 54.

The plurality of O-rings 72, 74 are corresponding to the adhesive area 56 of the insulating tube 5. The bottom end is disposed with the ring groove 66, and the adhesive glue P is left in the adhesive area 56.

The above description is only for the preferred embodiment of the present invention, and is intended to clarify the features of the present invention, and is not intended to limit the scope of the embodiments of the present invention. Changes that are well known to those skilled in the art are still within the scope of the invention.

Claims (5)

The invention relates to a rubber leakage preventing structure of a torque wrench, which comprises a shaft tube, a driving portion disposed at one end of the shaft tube and an adjusting button, and a set is disposed on an outer peripheral side of the shaft tube and further opposite to the driving portion. An insulating tube, a set of grip tubes disposed on the outer peripheral side of the shaft tube and having opposite ends respectively abutting the insulating tube and the adjusting knob, wherein the insulating tube further has a plug portion, the plug The connecting portion is formed on the outer peripheral surface of the insulating tube with respect to the other end of the driving portion; the grip tube has a set of connecting portions corresponding to the inserting portion, and the sleeve portion is provided with a recessed ring disposed on the inner diameter of the grip tube The surface is sleeved on the outer peripheral side of the plug portion; a recessed portion is disposed on the inner diameter surface of the plug portion to provide a glue filling; a ring groove is formed in the grip tube a diameter surface adjacent to the socket portion; and a plurality of O-rings sleeved on the outer peripheral side of the shaft tube, and disposed in the adhesive area and the ring groove, to limit the adhesive to be placed in the rubber Area. The adhesive leakage preventing structure of the torque wrench according to the first aspect of the invention, wherein the insulating tube further comprises at least one limiting portion with respect to the other end of the plug portion, the limiting portion is axially recessed. The inner circumference of the insulating tube faces the outer peripheral surface of the shaft tube, and at least one limiting stud is protruded from the limiting portion to limit the rotational movement of the insulating tube. The rubber leakage stop structure of the torque wrench of claim 1 or 2, wherein the shaft tube further comprises a torque mechanism, wherein the torque mechanism is coupled to the driving portion and the adjusting button respectively. The adhesive leakage preventing structure of the torque wrench of claim 3, wherein the handle tube has a set of joints and a transparent window; the sleeve portion is corresponding to the recessed portion of the plug portion. The inner diameter surface of the handle tube; the transparent window is disposed on the grip tube corresponding to the torque mechanism. The adhesive leakage preventing structure of the torque wrench of claim 3, wherein the insertion portion is smaller than the outer diameter of the insulating tube.